nvm, I found it
Q. I lost my 3g connection after I flashed cm6, now the icon just says "H".
A. You didn't lose 3g - the H is for HSDPA, which is enhanced 3g, sometimes referred to as 3.5g. It's a good thing, if you see an "H" where the "G" used to display - don't worry about it. Print this out for next time you head to the can.